package com.itheima.reggie.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.itheima.reggie.common.R;
import com.itheima.reggie.dto.DishDto;
import com.itheima.reggie.entity.Dish;
import com.itheima.reggie.entity.DishFlavor;
import com.itheima.reggie.mapper.DishMapper;
import com.itheima.reggie.service.DishFlavorService;
import com.itheima.reggie.service.DishService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;


import java.util.List;
import java.util.function.Function;
import java.util.stream.Collectors;

@Service
@Slf4j
public class DishServiceImpl extends ServiceImpl<DishMapper,Dish> implements DishService {
    @Autowired
    private DishFlavorService dishFlavorService;
    /**
     * 新增菜品，同时保存对应的口味数据
     * @param dishDto
     */
    @Transactional
    @Override
    public R<String> addDishWithFlavor_aop1(DishDto dishDto) {
        boolean save = this.save(dishDto);
//菜品id
        Long dishId = dishDto.getId();

        List<DishFlavor> flavors = dishDto.getFlavors();
        flavors = flavors.stream().map((item) -> {
            item.setDishId(dishId);
            return item;
        }).collect(Collectors.toList());
        //saveBath
        boolean b = dishFlavorService.saveBatch(flavors);

        return save|b?R.success(""):R.error("");
    }

    @Override
    public DishDto getByIdWithFlavor(Long id) {
        Dish dish = this.getById(id);
        DishDto dishDto = new DishDto();
        BeanUtils.copyProperties(dish,dishDto);

        //查询当前菜品对应的口味信息，从dish_flavor表查询
        LambdaQueryWrapper<DishFlavor> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(DishFlavor::getDishId,dish.getId());
        List<DishFlavor> flavors = dishFlavorService.list(queryWrapper);
        dishDto.setFlavors(flavors);

        return dishDto;
    }
@Transactional
    @Override
    public R updateWithFlavor(DishDto dishDto) {
        Long id = dishDto.getId();
        LambdaQueryWrapper<DishFlavor> lqw = new LambdaQueryWrapper<>();
        lqw.eq(DishFlavor::getDishId,id);
        boolean removeDishFlavor = dishFlavorService.remove(lqw);
        boolean removeDish = this.removeById(id);

        boolean saveDish = this.save(dishDto);
        List<DishFlavor> flavors = dishDto.getFlavors();
        flavors = flavors.stream().map(item -> {
            item.setDishId(id);
            return item;
        }).collect(Collectors.toList());
        boolean saveDishFlavor = dishFlavorService.saveBatch(flavors);
        return removeDish|removeDishFlavor|saveDish|saveDishFlavor?R.success(""):R.error("");
//        //更新dish表基本信息
//        this.updateById(dishDto);
//
//        //清理当前菜品对应口味数据---dish_flavor表的delete操作
//        LambdaQueryWrapper<DishFlavor> queryWrapper = new LambdaQueryWrapper();
//        queryWrapper.eq(DishFlavor::getDishId,dishDto.getId());
//
//        dishFlavorService.remove(queryWrapper);
//
//        //添加当前提交过来的口味数据---dish_flavor表的insert操作
//        List<DishFlavor> flavors = dishDto.getFlavors();
//
//        flavors = flavors.stream().map((item) -> {
//            item.setDishId(dishDto.getId());
//            return item;
//        }).collect(Collectors.toList());
//
//        dishFlavorService.saveBatch(flavors);
    }


}

